Ken Norton Jr. Autographed Dallas Cowboys Speed Mini Helmet - Prova *Black This is a Hand Autographed Helmet of Ken Norton Jr. of the Dallas Cowboys. This is a Riddell Football Speed Mini Helmet. This item has a Prova Authentication, which Comes with a Prova #'ed Sticker hologram. You can view this item on the Prova website and it shows when and where the item was signed. It was signed either at a public autograph appearance or a Private Signing. This is a stock photo of the item. Although you may not receive this exact item, the item you receive is virtually identical and brand new in great shape.